The monetary jurisdiction of the tribunal is limited to that of small claims court, and with the increase in the ceiling of that venue in recent years it has allowed larger claims to proceed before the tribunal. (slaw.ca)
Decisions still have to be «correct» when they deal with constitutional divisions of powers between the federal and provincial governments (not something that comes up in your everyday tribunal hearing), issues of law that are outside of the tribunal's area of expertise and that are of central importance to the legal system as a whole; true questions of jurisdiction of the tribunal; and questions as to overlap between the jurisdictions of different specialized tribunals. (tdslaw.com)
On at least one occasion, the concurrent jurisdiction of a tribunal and the courts was sufficient to rebut the presumption of reasonableness (Rogers Communications Inc. v Society of Composers, Authors and Music Publishers of Canada, 2012 SCC 35 (CanLII)-RRB-, but the Supreme Court has resisted making such statutory schemes their own correctness category. (ablawg.ca)